Glue gun holder



FIG. 1 is a perspective view of the glue gun holder showing my new design;

FIG. 2 is an elevation view of one side thereof with the opposite side view being the same except reversed;

FIG. 3 is an elevation view of the front thereof;

FIG. 4 is an elevation view of the rear thereof; and

FIG. 5 is a top plan view thereof. 

The ornamental design for a glue gun holder, as shown and described. 